Genuine OEM Volkswagen Coolant Overflow Hose, part number 1C0121447M. This hose directs excess coolant to the overflow reservoir, preventing over-pressurization and potential damage to the cooling system. It is located at the front of the engine bay. This flexible rubber hose weighs 0.045 kg and measures 0.24 m in length. Genuine OEM hoses provide the correct routing geometry and material resistance to coolant, ensuring reliable performance and preventing leaks or blockages in the overflow system.